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In estimating the mean monthly fuel expenditure, miu, per household vehicle, the U.S. Energy Information Administration takes a sample of size 6272. Assuming that sigama = 20.75 dollars, determine the margin of error in estimating miu at the 95% level of confidence.
A population of size 1,000,000 claims has mean cycle time of 15 days, and a standard deviation of 4. 100 random samples of each size 64 are selected. What will be the approximate standard deviation of 100 sample means.
you are a manager of a 7-eleven. you have determined the probability a customer buys gasoline 0.32. you have also
a simple random sample of 60 items resulted in a sample mean of 10. the population standard deviation is 15.a. compute
Generate three random observations from the uniform distribution between -10 and 40 by using the following random numbers: 0.0965,0.5692,0.6658
An elevator has a uniform distribution ranging from 0 to 4 minutes. Find the mean and standard deviation of x, the time a customer on the second floor waits for an elevator.
When writing about the probability that it will rain in Boston on July 4 of next year, a newspaper reporter states that the probability is ½, because either it will rain or it will not.
Probability for simple and compound events.A certain bowler can bowl a strike 70% of the time. What is the probability that she.
Let {Xn : n >=1} be a sequence of positive independent random variables with E(Xn) = c 2 (0; 1) for each n. Let Yn = X1X2...Xn, the product of the Xi's. Use Markov's inequality to prove that Yn ~ 0 in probability.
Determine the probability distribution for X defined as number of defective items drawn (Hint: You have to determine P(X=0), P(X=1) and P(X=2).
Based on data from Neilsen Media Research survey 44% of 5108 randomly selected households had their televisions sets tuned to the Superbowl on game day. Identify the sample, the population, and explain if the sample is likely to be representative ..
During the war with Iraq in 1991 the Terraco Motor Company produced a lightweight, all terrain vehicle code named "J99 Terra" for the military. The company is now planning to sell the Terra to the public.
a study of 24 graduates of four-year colleges revealed the mean amount owed by a student in student loans was 14381.
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